BI-30745 精简语句，调整最小高度（+30px）

src/base/pane.js

@@ -52,7 +52,7 @@ BI.Pane = BI.inherit(BI.Widget, {
         var self = this, o = this.options;
         var loadingAnimation = BI.createWidget({
             type: "bi.horizontal",
-            cls: "bi-loading-widget",
+            cls: "bi-loading-widget" + ((BI.isIE() && BI.getIEVersion() < 10) ? " hack" : ""),
             height: 60,
             width: 60,
             hgap: 10,
@@ -74,7 +74,6 @@ BI.Pane = BI.inherit(BI.Widget, {
                 width: 5
             }]
         });
-        (BI.isIE() && BI.getIEVersion() < 10) && loadingAnimation.element.addClass("hack");
         if (o.overlap === true) {
             if (!BI.Layers.has(this.getName())) {
                 BI.createWidget({

src/less/base/pane.less

@@ -1,7 +1,7 @@
 @import "../index";
 @import "../resource/background";
 .bi-pane {
-    min-height: 25px;
+    min-height: 55px;
     .background-color(@color-bi-background-normal, 0);
 }